Malicious PDF — malware analysis report

Static analysis result for SHA-256 c188a9cb2b6c75e3…

MALICIOUS

PDF

46.8 KB Created: 2021-06-08 10:46:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: b8213c9f2f9a5736cfe47ba76b602b8f SHA-1: c88a3ba7b5cdb9c3ab29a3130176225669761655 SHA-256: c188a9cb2b6c75e3c333d076b001788c142c27fd4f261fc1d67f86030ba2e358
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The document body and embedded URLs suggest a lure for users seeking in-game currency or cheats, leading them to potentially malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.tw/app/431946152/roblox-one-piece-millennium-stats-hack-script-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/buy-delta-lite-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-but_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-hack-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-stuff-in-the-catalog-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005388.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5388 27244 bytes
SHA-256: 12ad482305e7dd145048ff5ae89b4c59c47b53a46f6ccf29a540c68dcc9baaf0
font_01_sfnt_off0000916a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x916A 19332 bytes
SHA-256: 830ba62038877e19ff984652d5777b52b159edc0034b50f9b57ee3b6f4fee96a

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